You go to a local mechanic to get your tires changed. the tires cost $300. there is a 6% sales tax, but you get a 10% discount. there is also a $10 non-taxable disposal fee for your old tires, which the mechanic tells you is not subject to discount. 18. write a function, t(x) for the total purchase amount after taxes, ignoring any discounts and fees.

or

Explanation:

if we take x as the tyre cost ($ 300)

Tax = 6%

the function ignoring the discounts and fees would be:

Now including discounts and fees, can be done by two ways

1) adding taxes before discount

To the price 300 add 6% tax = 318

discount would be 318 * 10% = 31.8

then the cost is 318 - 31.8 = 286.2

2) adding taxes after discount

To the price (300) we will apply the 10% discount

discount would be 300 * 10% = 30

price now will be 300- 30 = 270

now to the calculated price add the 6% tax

270* 1.06 = 286.2

say it in english maybe we can